HWA
Axial Expansion Joint
Standard model stainless steel axial expansion joint composed of single- or multi-ply unrestrained bellow, for mounting with welding ends up the pipeline.
Available with optional inner sleeve for bellow's protection and improved stability. Couplings can be made out of various carbon-steel or stainless steel grades.
For detailed technical specifications on HWA axial expansion joints please check the following table and documents or contact us.
Features
- stainless steel bellow
- axial movement compensation
- optional inner sleeve
- welding ends
- standard program available
Technical Specifications
Type | Series |
Size Range |
Pressure Class |
Movements | |||
---|---|---|---|---|---|---|---|
Axial [+/-mm] | Lateral [+/-mm] | Angular [+/-deg] | |||||
Axial Stainless Steel |
HWA | DN15-DN250 | PN16 | yes | no ** | no ** | |
* constructions with tie-rods are recommended for pressure thrust restraint and/or movement limitation ** limited lateral and angular movements are possible / acc. to individual quotation |
Type | Axial Stainless Steel | ||||||
---|---|---|---|---|---|---|---|
Series | HWA | ||||||
Couplings | weld-ends | ||||||
Size/Range | DN15-DN250 | ||||||
Pressure | PN16 | ||||||
Axial | yes | ||||||
Lateral | no ** | ||||||
Angular | no ** | ||||||
* constructions with tie-rods are recommended for pressure thrust restraint and/or movement limitation ** limited lateral and angular movements are possible / acc. to individual quotation |
Standard Program
Nominal Diameter [mm] |
Axial Movement [±mm] |
Spring Rate [N/mm] |
Overall Length [mm] |
Approx. Weight [kg] |
|
---|---|---|---|---|---|
15 | 12 | 29 | 175 | 0.1 | |
20 | 12 | 29 | 175 | 0.2 | |
25 | 15 | 65 | 185 | 0.3 | |
32 | 15 | 60 | 185 | 0.4 | |
40 | 15 | 72 | 190 | 0.5 | |
50 | 23 | 82 | 205 / 220 ** | 0.8 | |
65 | 23 | 72 | 230 / 240 ** | 1.2 | |
80 | 23 | 91 | 230 / 240 ** | 1.7 | |
100 | 23 | 79 | 230 / 250 ** | 2.2 | |
125 | 23 | 119 | 270 / 280 ** | 3.3 | |
150 | 33 | 162 | 270 / 315 ** | 4.3 | |
200 | 35 | 149 | 300 / 355 ** | 6.5 | |
250 | 35 | 153 | 300 / 355 ** | 8.0 | |
* overall length can be adjusted on individual request. ** overall length for items with inner sleeve (HWAI) |